SELECT COUNT( user_id ) AS `Records` , DATE( FROM_UNIXTIME( `since` ) ) AS `Date`
FROM `users` WHERE FROM_UNIXTIME(since) >= '2014-11-00'
GROUP BY DATE( FROM_UNIXTIME( `since` ) )
LIMIT 200
此查询每天返回新的注册,但是对于有0个新注册的日期,它会在图表中留下很大的空白,我怎样才能将其包含在这些日期中。计数为0?